Exceptions are still possible, and Attachments.xml and Launchables.xml will remain in play. In fact I don't see any way around having that per-item level of flexibility.

My hope with this new approach is to catch maybe 80% of the attachments, and especially those that are common across many items.

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You've already thought about AK-receivers, so you'd obviously need a distinction for ARs between NATO and AK. Perhaps even more (chinese stuff?). Same for sniper rifles (NATO vs. WP bc of scopes (PSO-3) ).

I'm thinking I can get away with just tags for AK / NATO receivers (in different sizes?) and then OR them with the tags for the weapons.

One possible issue is that I'm not sure if there's ever a case where you'd have a reason to limit the number of attachments. If so, then the bitwise approach is less ideal.

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How would you handle new rail system vs. 'unrailed' guns? I mean, there might be attachments that fit on a M16A4 but do not fit on a M16A1.

Right, so in this case, we'd see that the M16A1 receiver is "Assault Rifle+NATO" or something, and M16A4 is "Assault Rifle+NATO+RIS".

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Magwell adapters only fit for a specific caliber. How would you handle that?

Foregrips wouldn't make sense on single-shot shotguns, but would be useful on automatic shotguns, so you'd need 2 flags there...

These are some good examples of exceptions that would require keeping the old structure in place at the same time.


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SMGs that already have a built-in silencer won't accept a new one, so you'd need new tags there. This is under the assumption that the silencer effect has been calculated into the weapon stats, if its just a inseparable default attachment than your system is ok.

Silencers are an interesting wrinkle, in that they apply to many weapons, but also cannot be applied to all weapons. An extra tag doesn't really cut it here either, since the tags are inclusive rather than exclusive. Might be able to do something in combination with nasAttachmentClass...

Perhaps the approach to take here is to implement a list of attachments that are not compatible with a given item?